catalytic activity:1-alkyl-sn-glycero-3-phosphoethanolamine + H(2)O = 1-alkyl-sn-glycerol 3-phosphate + ethanolamine.,cofactor:Binds 2 divalent metal cations per subunit.,enzyme regulation:Inhibited by lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P). Inhibited by EDTA and EGTA. Activated by cobalt and nickel, inhibited by zinc and manganese.,function:Hydrolyzes lysophospholipids to produce lysophosphatidic acid (LPA) in extracellular fluids. Major substrate is lysophosphatidylcholine. Also can act on sphingosylphosphphorylcholine producing sphingosine-1-phosphate, a modulator of cell motility. Can hydrolyze, in vitro, bis-pNPP, to some extent pNP-TMP, and barely ATP. Involved in several motility-related processes such as angiogenesis and neurite outgrowth. Acts as an angiogenic factor by stimulating migration of smooth muscle cells and microtubule formation. Stimulates migration of melanoma cells, probably via a pertussis toxin-sensitive G protein. May have a role in induction of parturition. Possible involvement in cell proliferation and adipose tissue development. Tumor cell motility-stimulating factor.,induction:Up-regulated in massively obese subjects with glucose intolerance, and during adipogenesis.,PTM:It has been suggested that the active SMB domain may be permitted considerable disulfide bond heterogeneity or variability, thus two alternate disulfide patterns based on 3D structures are described with 1 disulfide bond conserved in both.,PTM:N-glycosylation, but not furin-cleavage, plays a critical role on secretion and on lysoPLD activity.,similarity:Belongs to the nucleotide pyrophosphatase/phosphodiesterase family.,similarity:Contains 2 SMB (somatomedin-B) domains.,subcellular location:Secreted by most body fluids including serum and CSF. Also by adipocytes and numerous cancer cells.,tissue specificity:Predominantly expressed in brain, placenta, ovary, and small intestine. Expressed in a number of carcinomas such as hepatocellular and prostate carcinoma, neuroblastoma and non-small-cell lung cancer. Expressed in body fluids such as plasma, cerebral spinal fluid (CSF), saliva, follicular and amniotic fluids. Not detected in leukocytes. Levels of isoform 1 expression are higher in peripheral tissues than in the central nervous system (CNS). Adipocytes only express isoform 1. Levels of isoform 3 expression are higher in the brain than in peripheral tissues.,
Secreted .
Detected in blood plasma (at protein level) (PubMed:12176993, PubMed:26371182). Predominantly expressed in brain, placenta, ovary, and small intestine. Expressed in a number of carcinomas such as hepatocellular and prostate carcinoma, neuroblastoma and non-small-cell lung cancer. Expressed in body fluids such as plasma, cerebral spinal fluid (CSF), saliva, follicular and amniotic fluids. Not detected in leukocytes. Isoform 1 is more highly expressed in peripheral tissues than in the central nervous system (CNS). Adipocytes only express isoform 1. Isoform 3 is more highly expressed in the brain than in peripheral tissues.
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